RU2002112159A - METHOD FOR MEASURING SPEED OF MOTION OF SCATTERING MICRO-OBJECTS - Google Patents

METHOD FOR MEASURING SPEED OF MOTION OF SCATTERING MICRO-OBJECTS

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Publication number
RU2002112159A
RU2002112159A RU2002112159/28A RU2002112159A RU2002112159A RU 2002112159 A RU2002112159 A RU 2002112159A RU 2002112159/28 A RU2002112159/28 A RU 2002112159/28A RU 2002112159 A RU2002112159 A RU 2002112159A RU 2002112159 A RU2002112159 A RU 2002112159A
Authority
RU
Russia
Prior art keywords
speed
motion
objects
scattering
photodetectors
Prior art date
Application number
RU2002112159/28A
Other languages
Russian (ru)
Other versions
RU2223504C1 (en
Inventor
Иван Владленович Федосов
Валерий Викторович Тучин
Original Assignee
Саратовский государственный университет им. Н.Г. Чернышевского
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Саратовский государственный университет им. Н.Г. Чернышевского filed Critical Саратовский государственный университет им. Н.Г. Чернышевского
Priority to RU2002112159/28A priority Critical patent/RU2223504C1/en
Publication of RU2002112159A publication Critical patent/RU2002112159A/en
Application granted granted Critical
Publication of RU2223504C1 publication Critical patent/RU2223504C1/en

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  • Length Measuring Devices By Optical Means (AREA)

Claims (1)

Способ измерения скорости движения рассеивающих объектов, включающий облучение объекта когерентным излучением с заданной степенью расходимости, преобразование флуктуации интенсивности спекл-поля в двух пространственно разделенных точках в электрические сигналы с помощью двух фотоприемников с последующим определением скорости по величине относительной задержки электрических сигналов, отличающийся тем, что облучение осуществляют перпендикулярно направлению скорости движения попеременно двумя соосными пучками, плоскости перетяжек которых расположены на заданном расстоянии одна от другой, фотоприемники располагают в поле рассеянного излучения в дальней зоне дифракции в плоскости, перпендикулярной оси пучков, а относительные временные задержки сигналов фотоприемников определяют для случаев освещения объекта каждым из пучков в отдельности, по разности величин относительных задержек определяют скорость движения рассеивающего объекта и его продольную координату.A method of measuring the speed of motion of scattering objects, including irradiating the object with coherent radiation with a given degree of divergence, converting the fluctuations of the speckle field intensity at two spatially separated points into electrical signals using two photodetectors, followed by determining the speed from the relative delay of the electrical signals, characterized in that irradiation is carried out perpendicular to the direction of the speed of movement alternately with two coaxial beams, the plane of the waist to which are located at a predetermined distance from one another, the photodetectors are placed in the scattered radiation field in the far diffraction zone in a plane perpendicular to the beam axis, and the relative time delays of the photodetector signals are determined for cases of illumination of the object by each of the beams separately, determined by the difference in the relative delays the speed of the scattering object and its longitudinal coordinate.
RU2002112159/28A 2002-05-06 2002-05-06 Method measuring velocity of diffusing microobjects RU2223504C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2002112159/28A RU2223504C1 (en) 2002-05-06 2002-05-06 Method measuring velocity of diffusing microobjects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2002112159/28A RU2223504C1 (en) 2002-05-06 2002-05-06 Method measuring velocity of diffusing microobjects

Publications (2)

Publication Number Publication Date
RU2002112159A true RU2002112159A (en) 2004-01-20
RU2223504C1 RU2223504C1 (en) 2004-02-10

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RU2002112159/28A RU2223504C1 (en) 2002-05-06 2002-05-06 Method measuring velocity of diffusing microobjects

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RU (1) RU2223504C1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2458337C2 (en) * 2010-05-19 2012-08-10 Российская академия наук Учреждение Российской академии наук Институт систем обработки изображений РАН (ИСОИ РАН) Method of determining low nonmagnetic inclusions and device for realising said method
CN103154708B (en) 2010-10-13 2015-01-14 奥林巴斯株式会社 Method for measuring diffusion characteristic value of particle by detecting single light-emitting particle
CN103210302B (en) 2010-10-19 2015-05-27 奥林巴斯株式会社 Optical analysis device for observing polarisation characteristics of single light-emitting particle, optical analysis method and optical analysis computer program therefor
JP5941923B2 (en) 2011-11-10 2016-06-29 オリンパス株式会社 Optical analysis apparatus using single luminescent particle detection, optical analysis method, and computer program for optical analysis
CN106370884B (en) * 2016-09-09 2019-12-24 成都通甲优博科技有限责任公司 Vehicle speed measuring method based on binocular camera computer vision technology

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RU2223504C1 (en) 2004-02-10

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MM4A The patent is invalid due to non-payment of fees

Effective date: 20050507